R Romsek Full Member Joined Nov 16, 2013 Messages 371 Jun 12, 2019 #2 The problem is that the correct answer is \(\displaystyle -1 \pm \dfrac{\sqrt{30}}{5}\) not \(\displaystyle \dfrac{-1 \pm \sqrt{30}}{5}\) you actually got the second one correct, and probably typoed the first one somewhere.

The problem is that the correct answer is \(\displaystyle -1 \pm \dfrac{\sqrt{30}}{5}\) not \(\displaystyle \dfrac{-1 \pm \sqrt{30}}{5}\) you actually got the second one correct, and probably typoed the first one somewhere.

S SarahMB New member Joined Jun 12, 2019 Messages 2 Jun 12, 2019 #3 Oh, I see. I concatenated the –1 into the first answer, and then failed to see that I could factor it out of the second. Thank you!

Oh, I see. I concatenated the –1 into the first answer, and then failed to see that I could factor it out of the second. Thank you!